Police will announce soon whether they will continue the search which has involved about 50 people.

Inspector Scott says police have been in contact with Mr Wilson's family and are assessing options.

"We're obviously having discussions about the ongoing nature of the search."

"We're having another go today, so we've got some volunteers and police up there to cover areas we haven't managed to get to and we'll be sending the helicopter up again, but the search is now getting very long in the tooth," he said.